That's a nice find, but far too frustrating for me to use. Most of the time I get pierced by the laser when attempting to dodge it (but not all of the time, which is rather strange, shouldn't it and aya travel at the same speed every time? does it depend on where Kaguya moves when she fires it?) and only about 15% of the time do I actually not get pierced. Once past that hurdle, moving back to squeeze between the second bubble and the laser is somewhat difficult, it does not help that I can't really tell if I'm getting hit by the laser or the bubble, my sense of bubble hitboxes is telling me that it has to be the laser that is simply bigger than it seems. Basically, it seems that getting between the bubble and the laser is nearly pixel perfect, if not totally pixel perfect. That + luck required to not get pierced makes it unlikely to use this strats several times in a row, even if it would indeed by a lot faster. Certainly too frustrating for me to try after the second photo is taken.
To be honest, I don't think IL runs are for me, all the randomness in this game makes optimization very annoying. In 9-4 for instance, you can easily get walled and forced to waste time by not charging as much even if you do execute this strategy for two or three photos.
I'll still look for scenes that I actually enjoy running this way. There's gotta be some of them out there. 3-6 is kind of enjoyable if you do it my way (normally It's one of my least favourite scenes. ) but I never managed to beat the time on the table. It does help that the scene is seemingly at least, static.
